replace rvm by rbenv
Update params.pp to support Redhat/Centos >= 6.4

In the latest versions of OpenVPN the easy-rsa suite is not present anymore in the package.
Instead one should separately install the easy-rsa package from EPEL.
fix typo in variable name
Fix spaces
Make puppet-lint happy
Fix tests
Merge pull request #32 from luxflux/elisiano-patch-1

Elisiano patch 1